6J400A2BFBD Marathon Special Products Class J Fuse Holder, 400 A 600 V, 2 Pole
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The Marathon Special Products 6J400A2BFBD is a 2 pole, open, bolt in fuse Class J fuse holder rated 201 to 400 A at 600 V AC, with a 200,000 A short circuit withstand rating. Fuse size: Class J, 201 to 400 A, bolt in. Wire range is Two box lugs per pole: (1) 350 kcmil to #6 AWG plus (1) 600 kcmil to #2 AWG, or (1) 350 kcmil to #2 AWG plus (1) 400 kcmil to #2 AWG, stranded copper. UL listed to UL 4248-1 and UL 4248-8. Applied Control is the Marathon Special Products manufacturers representative. Send the catalog number, or the fuse amperage, poles and wire size, and the quote comes back the same business day.
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6J400A2BFBD specifications
| Catalog number | 6J400A2BFBD |
| Manufacturer | Marathon Special Products (Regal Rexnord) |
| Fuse class | Class J |
| Poles | 2 |
| Style | Open, bolt in fuse |
| Ampere rating | 201 to 400 A |
| Voltage rating | 600 V AC |
| Short circuit withstand | 200,000 A |
| Fuse size | Class J, 201 to 400 A, bolt in |
| Wire range | Two box lugs per pole: (1) 350 kcmil to #6 AWG plus (1) 600 kcmil to #2 AWG, or (1) 350 kcmil to #2 AWG plus (1) 400 kcmil to #2 AWG, stranded copper |
| Terminal torque | Terminal 275 in lb (31.1 N m) or 375 in lb (42.4 N m) by lug; fuse bolts 80 in lb; mounting not over 50 in lb |
| Materials | UL94 V-0 thermoplastic insulator, tin plated aluminum alloy fuse clips, tin plated aluminum terminal screws, zinc plated steel hardware |
| Standards and listings | UL 4248-8, UL file E35113 (IZLT and IZLT7); CSA C22.2 No. 4248.1-07 |
Specifications from the Marathon Special Products datasheet for 6J400AxBFBD. Confirm against the current datasheet before installation.
Marathon datasheet for 6J400AxBFBD (PDF)
Selecting a Class J fuse holder
Pick the holder by the fuse ampere rating first, because Class J fuse bodies change size at 30, 60, 100, 200, 400 and 600 A and the clips only fit one size. Then match the wire range to the conductor you are landing and check the terminal torque. An enclosed DIN rail holder keeps fingers off live parts in a control panel. An open reinforced holder is the low cost choice inside a bolted enclosure. Send the fuse size, wire size and pole count and we will pick the catalog number with you.
Cross reference
Have a Bussmann, Mersen (Ferraz Shawmut) or Littelfuse Class J fuse holder part number? Send it with the amperage and poles and we will cross it to the matching Marathon catalog number. See the cross reference hub for the other lines we cross.
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Bussmann, Mersen, Ferraz Shawmut and Littelfuse are trademarks of their respective owners. Applied Control Inc. is not affiliated with these companies. Competitor names appear only to identify products for comparison.